Curia Damiano's blog

Tips about the CKAD and CKA Kubernetes certifications

In July 2022 I got my first Kubernetes certification: CKAD (Certified Kubernetes Application Developer). In November 2022 I got the second Kubernetes certification: CKA (Certified Kubernetes Administrator). In this post, I want to give a few tips about study preparation and about the final exam. Preparation Following suggestions of a

Microsoft Authenticator and new iPhone

Every year I tend to update my iPhone. While the iCloud backup and restore works incredibly well, there are still some apps who make exceptions and delay this migration process. One of this apps is Microsoft Authenticator. It is able to move personal accounts from phone to phone, but for

My Contact Details in a QR Code

A couple of weeks ago I have met a new person. When exchanging our contact details, I was going to ask his phone number... and he handed me over his phone and told me: scan this QR code! I was really surprised. I did it, and voilà, I had his

Swift

URLSession async in iOS 13 and 14

Swift 5.5 has initially introduced async/await for iOS 15. With a very welcome news, Xcode 13.2 has extended support of async/await to previous versions iOS 13 and 14. This extension of async/await doesn't include support for the libraries. You can find explained in multiple blog

GitHub

GitHub: how to commit

These are the commands to commit and push to a remote in GitHub: git add . git commit -m "Comment to the commit" git push origin master If after the commit you also want to create a tag: git tag "MyTagName" git push origin "MyTagName"

SwiftUI

SwiftUI Background Downloads

Introduction I needed to implement background downloads in a SwiftUI application. Checking in Internet, I have found only old documentation (a part from the official Apple docs). Because of this, I have developed a little POC application in SwiftUI that implements background downloads. In this blog post, I will describe

.NET

Code Analysis in .NET 5 and 6

With my last upgrade of the Zoo di 105 podcast from .NET Core 3.1 to .NET 6, I have also updated how code analysis is implemented in the project. In the previous versions of .NET Core, it was implemented via a NuGet package (initially Microsoft.CodeAnalysis.FxCopAnalyzers and then

Azure

Zoo 105 Podcast: Migration from .NET Core 3.1 to .NET 6

Azure Functions have been updated to support the latest version of .NET, the 6.0, that is LTS (Long Term Support). I have taken the opportunity to update my project, the Azure Function that generates the podcast for Zoo di 105. In this blog post I want to describe shortly

Azure

Azure Speech to Text of MP3 files

For a customer, I needed to create a POC where we wanted to run the Azure Speech service Speech-to-Text against the Mozilla Common Voice project, that is a collection of MP3 files reproducing people speaking in different languages. Currently Speech-to-Text can't work with MP3 files; the suggested solution is to

GitHub

Git: how to handle new-lines properly in Windows

When cloning Git repositories to your Windows machine, Git offers the possiblity to automatically convert new-lines in the Windows format. To enable this, you must run from the command line the following command: git config --global core.autocrlf true Reference: Configuring Git to handle line endings

Smart Home

HomeKit Eve thread accessories: Eve Door & Window Sensor, Eve Energy, Eve Aqua

For my previous posts, I have already explained how I have set up a HomeKit home. Recently I have upgraded my Apple TV to the newest version, with support for the Thread protocol. This allows to have devices without additional hubs. Also, like what happens with the ZigBee protocol, increasing

Xcode

Xcode: how to show build times

To show Xcode build times, open a termina window and execute the following command: defaults write com.apple.dt.Xcode ShowBuildOperationDuration YES You don't even need to restart Xcode! Thank you Sean Allen for your helpful tip!

Windows

OneDrive error: "The tag present in the reparse point buffer is invalid"

Often (too often), OneDrive on Windows gets confused and creates errors in the file system. The result is that some files appear to be locked; in reality the situation is even worse. Trying to delete them, you get the error "The tag present in the reparse point buffer is

Microsoft Teams: how clean its cache

To me, and to many other customers, often it happens that Teams on Windows is unable to receive messages, while they continue to arrive on mobile apps. I have found that the solution to this problem is to clear the Teams cache. For Windows: On the top right corner, log

PowerShell

PowerShell is not digitally signed

When running a PowerShell script, you could get the following error: "a.ps1 is not digitally signed. You cannot run this script on the current system. For more information about running scripts and setting execution policy, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170."

Windows

Search for Text in Files

Sometimes it happens to me the need to search for text in all files in a folder. In Window, File Explorer doesn't give the best search experience (or better: it doesn't work at all). What I do, every time I search in StackOverflow and I always find this as the

Xcode

WWDC21 - Technical Notes

Like the post of last year on WWDC20, I write notes on the videos I watch about WWDC21. Keynote No technical notes here Platforms State of the Union Xcode Cloud 2:47 - CI/CD service built into Xcode and hosted in the cloud. Designed to support all Apple platforms.

SwiftUI

SwiftUI: Handling State in your Views

In SwiftUI there are multiple ways to handle state in your views. @State @State is used when your view own this variable. When the variable changes its value, SwiftUI updates the views automatically. Because of this, it makes sense to use @State for value types (i.e. strings, booleans), where

Swift

Swift: How Install SwiftLint

SwiftLint is an open-source tool used to enforce styles and conventions. Installing it is not difficult, but someone might need a few hints, so I have prepared this blog post to explain them. First of all, you need to download it from GitHub, download the latest SwiftLink.pkg from the

Swift

SwiftUI: Preview in Landscape

Even in XCode 12, it is still not possible to run a preview in landscape. I list here two solutions I have found.. but note that with live preview, both options are ignored - we will really need to wait for an update from Apple to definitely solve this issue

Swift

Swift 5.3 - Section 4: Advanced Topics

For this series of posts I have used extensively the book Swift Apprentice by Ray Wenderlich. I strongly suggest this book, because if you buy the digital copy, Ray Wenderlich guarantees updates for the rest of the life! I have also to say that Ray Wenderlich offers a cheat sheet

Swift

Swift 5.3 - Section 3: Building Your Own Types

For this series of posts I have used extensively the book Swift Apprentice by Ray Wenderlich. I strongly suggest this book, because if you buy the digital copy, Ray Wenderlich guarantees updates for the rest of the life! I have also to say that Ray Wenderlich offers a cheat sheet

Swift

Swift 5.3 - Section 2: Collection Types

For this series of posts I have used extensively the book Swift Apprentice by Ray Wenderlich. I strongly suggest this book, because if you buy the digital copy, Ray Wenderlich guarantees updates for the rest of the life! I have also to say that Ray Wenderlich offers a cheat sheet

Swift

Swift 5.3 - Section 1: Swift Basics

For this series of posts I have used extensively the book Swift Apprentice by Ray Wenderlich. I strongly suggest this book, because if you buy the digital copy, Ray Wenderlich guarantees updates for the rest of the life! I have also to say that Ray Wenderlich offers a cheat sheet

Azure

Kubernetes error: "unable to recognize "curiakube.yaml": no matches for kind "Deployment" in version "apps/v1beta1""

I have written in previous posts How I have moved my Ghost blog to Azure Kubernetes and How to update a Kubernetes cluster. Because of some maintenance, I have deleted the deployment of the Kubernetes pod, and when trying to reapply it, I got the following error: damiano@Azure:~$ kubectl